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The influence of grooves on the behavior of steel tube shock absorbers

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Authors
Atanasovska, Ivana
Momčilović, Dejan
Vulović, Snežana
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Abstract
Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with gr...ooves.

Keywords:
energy absorbers / cold working tubes / nonlinear Finite Element Analysis
Source:
Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, 2019, 1-6
Funding / projects:
  • Dynamics of hybrid systems with complex structures. Mechanics of materials. (RS-174001)
  • Development of Methodology for Improvement of Operational Performance, Reliability and Energy Efficiency of Machine Systems used in the Resource Industry (RS-35029)
  • Software development for coupled multiphysics problems (RS-32036)

ISBN: 978-86-909973-7-4

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_rims_467
URI
http://rims.institutims.rs/handle/123456789/467
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za ispitivanje materijala
TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan
AU  - Vulović, Snežana
PY  - 2019
UR  - http://rims.institutims.rs/handle/123456789/467
AB  - Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves.
C3  - Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia
T1  - The influence of grooves on the behavior of steel tube shock absorbers
EP  - 6
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_rims_467
ER  - 
@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan and Vulović, Snežana",
year = "2019",
abstract = "Major function of railway vehicles absorbers is to absorb energy through controlled deformation during frontal rail vehicle collisions. The results presented and discussed in this paper is a part of the research of one particular type of absorber consist of a thin-walled seamless tube and conical mandrel. The influence of the groove, which occurred during cold worked tube manufacturing, on the behavior and energy absorption of this type of shock absorber is analyzed. The coupled nonlinear Finite Element Analysis is used for calculation of stress-strain state and plastic deformation work/volume of tube absorbers with defects. The results of the research presented in this paper show that the grooves on outer surface of expansion tubes in some cases can be beneficial due to strain hardening process in root of stress concentrator i.e. defect. The beneficial effect of grooves is proven by simulation in which is obvious that the energy absorbed level could be higher on expansion tube with grooves.",
journal = "Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia",
title = "The influence of grooves on the behavior of steel tube shock absorbers",
pages = "6-1",
url = "https://hdl.handle.net/21.15107/rcub_rims_467"
}
Atanasovska, I., Momčilović, D.,& Vulović, S.. (2019). The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia, 1-6.
https://hdl.handle.net/21.15107/rcub_rims_467
Atanasovska I, Momčilović D, Vulović S. The influence of grooves on the behavior of steel tube shock absorbers. in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia. 2019;:1-6.
https://hdl.handle.net/21.15107/rcub_rims_467 .
Atanasovska, Ivana, Momčilović, Dejan, Vulović, Snežana, "The influence of grooves on the behavior of steel tube shock absorbers" in Proceedings of the 7h International Congress of Serbian Society of Mechanics, Sremski Karlovci, Serbia (2019):1-6,
https://hdl.handle.net/21.15107/rcub_rims_467 .

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